On rock in limestone sinks, rarely epiphytic on trunks and roots of trees in limestone sinks; 0--100 m; Fla.

Some early authors listed Trichomanes sphenoides Kunze as occurring in Florida. J. G. Wessels Boer (1962), however, reduced T . sphenoides to T . punctatum subsp. sphenoides , which occurs in the Greater Antilles, Central America, and western South America, and considered all the Florida material to be the endemic T . punctatum subsp. floridanum .